blue exhaust smoke

cptn.stangaroo · 06-01-2001, 09:57 AM

i have blue smoke coming out of my exhaust, any ideas of what could be wrong?

R-MODEL · 06-01-2001, 10:25 AM

It sounds like you are burning oil, time for a engine job, that is if you have blue smoke all the time

------------------
1994 Mustang GT with 110K miles, ported cobra intake, ported edlebrock heads, 1 3/4" long tube, b303 cam, 2 chamber flowmasters, cobra-r wheels, cobra front brake kit, saleen wing, recaro seats, radar detector, etc.

cptn.stangaroo · 06-01-2001, 10:30 AM

the engines rebuilt, it only has 5k on it

Mercury · 06-01-2001, 01:41 PM

I've seen a ton of new rebuilt engines burn oil. For many reasons.

1. Honning (spelled wrong) the cylinder bore improperly. You should see what happens when people dont hone the cylinder at all. Geesh.

2. The person might not of staggered the gaps on the piston rings. ie. put each ring gap 180 degrees from one another.

3. Some people reuse old Valve stem seals to save money, and they leak/crack shortly after.

There are several other things it might possibly be, but those are the most common ones I see.

I've seen some major goof ups to. Some one i know used standard bearings when they had the crank on a 4 cyl pontiac engine turned 20 thousandths. I've seen people forget to put the little star retainer (I know thats not the proper term) on the oil pump shaft, and that can cause some BIG problems. And so on and so on.

------------------
64 1/2 "D" code Red Mustang Coupe. 289, C4, 3:1 rear gear. Mallory duel point. Ported & Polished 65 heads shaved .01 with 351 windsor valves, 11:1 comp, 1.7:1 sled rockers, blue wolverine lumpy cam, modified autolite 4100 Hipo 4 barrel. GT Apperance pkg. Period white wall tires. And to many others to list

2000 Perf Red Mustang GT. 5spd. BBK Underdrive pulleys, Flotech off-road H pipe. Hurst T-Handle

64 1/2 red 6cyl coupe. Auto. project car. Mods, Rust, rust, and more rust

cptn.stangaroo · 06-01-2001, 03:29 PM

oh no

429mustang · 06-01-2001, 05:53 PM

Does it only do it after you start it or all the time?

------------------
86 Mustang GT w/pretty stock 93 5.0 (cam,pulleys,injectors, throttlebody,h-pipe)
Motor to be swapped for a 1970 429 +.030, ported heads, solid roller cam, victor intake, 10.2:1 comp, C-6 trans, 3:73 rearend W/moser axles

jonnyk · 06-03-2001, 04:32 PM

Yeah describe when it smokes. If it smokes on startup or when you rev it a bit after extended idling it could be valve seals (had that on my old car). If it's blue when you're on the gas and generally all the time it's probably ring or cylinder related...

------------------
1991 LX Hatch 5.0L

cptn.stangaroo · 06-07-2001, 01:52 PM

it smokes after its been idling for a few minutes,not when i drive

Smokedawg · 06-07-2001, 02:19 PM

Just tell me your not running synthetic oil on a fresh rebuilt motor..

------------------
347 Stroker Motor: Balanced, Cobra Transmission, Extrude Ported and Polished Upper and ported Lower, GT40 Milled Ported and Polished Heads, B303 Cam, BBK 1 5/8 Headers, 30lb Bosch Injectors, Holley AFPR, March Underdrive Pulleys, Perma-Cool Fan, 3-Core Radiator, Accel Performance Coil, Accel 300+ Racing Wires, Ram Air, K&N Filter, 73mm Vortech MAF, 70mm TB, FlowMaster Exhaust w/BBK Offroad H-Pipe, Hurst Shifter, 3:55 Gears, Ram Clutch, Cross Drilled Rotors, AC del, rear seat del.

cptn.stangaroo · 06-07-2001, 03:02 PM

no way!! i know better, and besides that craps expensive

Smokedawg · 06-07-2001, 03:24 PM

Good..That synthetic oil on a fresh motor is sometimes not good. The oil wont seat the bearing well and will burn bad..If your car is only on 5k after rebuild and is smoking..U got something wrong..

------------------
347 Stroker Motor: Balanced, Cobra Transmission, Extrude Ported and Polished Upper and ported Lower, GT40 Milled Ported and Polished Heads, B303 Cam, BBK 1 5/8 Headers, 30lb Bosch Injectors, Holley AFPR, March Underdrive Pulleys, Perma-Cool Fan, 3-Core Radiator, Accel Performance Coil, Accel 300+ Racing Wires, Ram Air, K&N Filter, 73mm Vortech MAF, 70mm TB, FlowMaster Exhaust w/BBK Offroad H-Pipe, Hurst Shifter, 3:55 Gears, Ram Clutch, Cross Drilled Rotors, AC del, rear seat del.

06-01-2001, 09:57 AM	#1
cptn.stangaroo Registered Member Join Date: May 2001 Location: nyc Posts: 29	blue exhaust smoke i have blue smoke coming out of my exhaust, any ideas of what could be wrong?

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06-01-2001, 10:25 AM	#2
R-MODEL Registered Member Join Date: Mar 2000 Location: Toronto, Ontario, Canada Posts: 54	It sounds like you are burning oil, time for a engine job, that is if you have blue smoke all the time ------------------ 1994 Mustang GT with 110K miles, ported cobra intake, ported edlebrock heads, 1 3/4" long tube, b303 cam, 2 chamber flowmasters, cobra-r wheels, cobra front brake kit, saleen wing, recaro seats, radar detector, etc.

06-01-2001, 10:30 AM	#3
cptn.stangaroo Registered Member Join Date: May 2001 Location: nyc Posts: 29	the engines rebuilt, it only has 5k on it

06-01-2001, 01:41 PM	#4
Mercury The Redneck James Bond Join Date: Sep 2000 Location: Fayetteville NC Posts: 1,707	I've seen a ton of new rebuilt engines burn oil. For many reasons. 1. Honning (spelled wrong) the cylinder bore improperly. You should see what happens when people dont hone the cylinder at all. Geesh. 2. The person might not of staggered the gaps on the piston rings. ie. put each ring gap 180 degrees from one another. 3. Some people reuse old Valve stem seals to save money, and they leak/crack shortly after. There are several other things it might possibly be, but those are the most common ones I see. I've seen some major goof ups to. Some one i know used standard bearings when they had the crank on a 4 cyl pontiac engine turned 20 thousandths. I've seen people forget to put the little star retainer (I know thats not the proper term) on the oil pump shaft, and that can cause some BIG problems. And so on and so on. ------------------ 64 1/2 "D" code Red Mustang Coupe. 289, C4, 3:1 rear gear. Mallory duel point. Ported & Polished 65 heads shaved .01 with 351 windsor valves, 11:1 comp, 1.7:1 sled rockers, blue wolverine lumpy cam, modified autolite 4100 Hipo 4 barrel. GT Apperance pkg. Period white wall tires. And to many others to list 2000 Perf Red Mustang GT. 5spd. BBK Underdrive pulleys, Flotech off-road H pipe. Hurst T-Handle 64 1/2 red 6cyl coupe. Auto. project car. Mods, Rust, rust, and more rust

06-01-2001, 03:29 PM	#5
cptn.stangaroo Registered Member Join Date: May 2001 Location: nyc Posts: 29	oh no

06-01-2001, 05:53 PM	#6
429mustang Registered Member Join Date: May 2001 Location: westerville, OH USA Posts: 618	Does it only do it after you start it or all the time? ------------------ 86 Mustang GT w/pretty stock 93 5.0 (cam,pulleys,injectors, throttlebody,h-pipe) Motor to be swapped for a 1970 429 +.030, ported heads, solid roller cam, victor intake, 10.2:1 comp, C-6 trans, 3:73 rearend W/moser axles

06-03-2001, 04:32 PM	#7
jonnyk Being stroked is great Join Date: Oct 1998 Location: Alberta, Canada Posts: 772	Yeah describe when it smokes. If it smokes on startup or when you rev it a bit after extended idling it could be valve seals (had that on my old car). If it's blue when you're on the gas and generally all the time it's probably ring or cylinder related... ------------------ 1991 LX Hatch 5.0L

06-07-2001, 01:52 PM	#8
cptn.stangaroo Registered Member Join Date: May 2001 Location: nyc Posts: 29	it smokes after its been idling for a few minutes,not when i drive

06-07-2001, 02:19 PM	#9
Smokedawg Tires Fear Me... Join Date: Jan 2001 Posts: 867	Just tell me your not running synthetic oil on a fresh rebuilt motor.. ------------------ 347 Stroker Motor: Balanced, Cobra Transmission, Extrude Ported and Polished Upper and ported Lower, GT40 Milled Ported and Polished Heads, B303 Cam, BBK 1 5/8 Headers, 30lb Bosch Injectors, Holley AFPR, March Underdrive Pulleys, Perma-Cool Fan, 3-Core Radiator, Accel Performance Coil, Accel 300+ Racing Wires, Ram Air, K&N Filter, 73mm Vortech MAF, 70mm TB, FlowMaster Exhaust w/BBK Offroad H-Pipe, Hurst Shifter, 3:55 Gears, Ram Clutch, Cross Drilled Rotors, AC del, rear seat del.

06-07-2001, 03:02 PM	#10
cptn.stangaroo Registered Member Join Date: May 2001 Location: nyc Posts: 29	no way!! i know better, and besides that craps expensive

06-07-2001, 03:24 PM	#11
Smokedawg Tires Fear Me... Join Date: Jan 2001 Posts: 867	Good..That synthetic oil on a fresh motor is sometimes not good. The oil wont seat the bearing well and will burn bad..If your car is only on 5k after rebuild and is smoking..U got something wrong.. ------------------ 347 Stroker Motor: Balanced, Cobra Transmission, Extrude Ported and Polished Upper and ported Lower, GT40 Milled Ported and Polished Heads, B303 Cam, BBK 1 5/8 Headers, 30lb Bosch Injectors, Holley AFPR, March Underdrive Pulleys, Perma-Cool Fan, 3-Core Radiator, Accel Performance Coil, Accel 300+ Racing Wires, Ram Air, K&N Filter, 73mm Vortech MAF, 70mm TB, FlowMaster Exhaust w/BBK Offroad H-Pipe, Hurst Shifter, 3:55 Gears, Ram Clutch, Cross Drilled Rotors, AC del, rear seat del.